What happened to the first Fortune 500?

The first-ever Fortune 500 was published in 1955. 60 years later we look back at where the companies from the head of the class—Fortune 500 companies 1-10, with revenues ranging from $1.7-$9.8 billion—are now. Some no longer exist, some exist by another name and/or as shadows of their former corporate selves, and some still stand today as the biggest names in corporate America.